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2 years ago

Please help ! i dont understand this

Mathematics

1 answer:

motikmotik2 years ago

8 0

Answer: B

Step-by-step explanation:

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Together, two apples have 1/5 gram of fat. How many apples have a total of 4 grams of fat?

kompoz [17]

Answer:

40 apples

Step-by-step explanation:

If 2 apples is 1/5 of a gram of fat, then 5*2 (or 10) apples will have a total of 1 gram of fat. Therefore, 4*5*2 (or 40) apples will have a total of 4 grams of fat.

Sorry I didn't get to you guys in time. Hopefully this answer helps students in the future.

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3 years ago

The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the

Darya [45]

Answer:

Brand 1 Brand 2 Difference

37734 35202 2532

45299 41635 3664

36240 35500 740

32100 31950 150

37210 38015 −805

48360 47800 560

38200 37810 390

33500 33215 285

Sum of difference = 2532+ 3664+740+150 −805+ 560 +390 +285 = 7516

Mean = $d=\frac{7516}{8}$

Mean = $d=939.5$

a) d= 939.5

$\text{Sample Standard deviation, s} = \sqrt{\dfrac{(x-\bar{x})^2}{n-1}}$

$=\sqrt{\dfrac{(2532-939.5)^2+(3664-939.5)^2+(740-939.5)^2 ...+(285-939.5)^2}{8-1}}$

=1441.21

b)SD= 1441.21

c)Calculate a 99% two-sided confidence interval on the difference in mean life.

confidence level =99%

significance level =α= 0.01

Degree of freedom = n-1 = 8-1 =7

So, $t_{\frac{\alpha}{2}}=3.499$

Formula for confidence interval $= \left( \bar{X} \pm t_{\frac{\alpha}{2}} \times \frac{s}{\sqrt{n}} \right)$

Substitute the values

confidence interval $= 939.5 \pm 3.499 \times \frac{1441.21}{\sqrt{8}} \right)$

confidence interval $= 939.5 - 3.499 \times \frac{1441.21}{\sqrt{8}} \right)$ to $= 939.5 + 3.499 \times \frac{1441.21}{\sqrt{8}} \right)$

Confidence interval $−843.396\$ to $2722.396$

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3 years ago

If the sum of 2/3 and 3/4 is divided are the product of 2/3 and 3/4 what is the quotient?

Virty [35]

The photo shows the answer

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3 years ago

Area of triangle Question 4

Marat540 [252]

Answer:

3sq units

Step-by-step explanation:

bxh = 2x3=6

6/2=3

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2 years ago

There are 50 tickets in a raffle bag, and 10 of the tickets belong to Gary. A ticket is chosen at random, and the ticket owner's

IgorC [24]

1/25 or .04% would be the correct answer

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3 years ago